Chair



July 15 .1924. 1501,18 1

c. H. PETERS ET AL CHAIR Filed April 24, 1922 2 SneeLs-Sneel' kzx f July 15 19246 C H. PETERS ET CHAIR Filed April 24, 1922 Z Sheets-$heet 3 F /a m Patented July 15, 1924.

stirrer-VI) n. PET-Ens, or LAKEWOOD, AND EDWARD D. nunn sor *CLEV-ELAND, OHIO, ASSIGNORS TO THE IBET'ICHER STAMPING. & slvnmurnorunme COMPANY, or CLEVELAND, 01110,,A. conronn'rron oFo HIo.

Application filed April '24, .1922. Serial No. 556,249.

.T'oaZl wliom-z'tmag/ concem Be it known that we, (1) CLIFFORD H.

;BE'-rERsand EDWARD D. BUMP, citizens of the United States,'residing at (1) Lakewood and (2) Cleveland, in the county :of

Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Chairs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates :to chairs of the type commonly known to the trade as estenographers chairs. In chairs of this type, the seat is mountedaon a turning post and the "back is spring-supported in such manner that it can be tilted back and forth to a certain extent; the back is also adjustable with respect to its supporting arms, so that it can be set .at various inclinations. The object of the present invention is to improve the general structure of such chair, particular attention.being given tothe means for supporting the back in position .toQenable it to be inclined under yielding pressure. Thestructure also has other advantages in detail, as will be more fully .apparent from the following description.

In the accompanying drawings, Fig. 1 represents a side elevationof the chair; Fig. 2 a partial vertical section'of the same; Fig. 3 a plan view, the seatbeing removed and certain ,parts being shown in section; Fig. a sectional view on theline H of Fig. 2; Fig. 5 a sectional :view .on the line .5-5 of-Fig. 2; Fig. 6 a detail of the adjusting device for the back, showing a slight modification of the pinand.-slot connection; Fig. 7 a detail in perspective .of a rocking bar or cross member; and Fig.8 a detail of 4.0 one of the backesupporting arms. I

As shown in the drawings, the chair includes a post.6 mounted to turn in a hub 8, supported by legs 7 in any suitable manner. The seat -9 is fastened to right .and left brackets 10 "which preferably consist each of an angle iron pressedto the formshown, the seat being mounted on .the upper horizontal flanges of-the angles. The post 6 is connected to the seat brackets by means of a head consisting of an upper and outer channeled member 11 and a lower and inner channeled member 12, the former member having a hole to receive a stud 13 at adjustment.

the top of the;pos't Xandr'esting on a 'shoul- .der 14 beneath the stud, messed "being riveted tothe :head member 11, fits indicated right standard '21 the lower end of which is fastened between two pl'ates22 the outer sides or faces of which are grooved, as indicated at 23., to engage with corresponding grooves or "indent'atio1ns 2i iin jtheagd j'iacent faces of the rear ends of arms 24 "which support the back; see Figs. '1, "2, '6 .and'8. The plates 22 are pivoted at their hunt ends ion-a cross pin 25 which. is riveted to and extends "between the farms '24.: brilt "26 extends through the lower end, of the standard 21 and through slots 27in"the;ends of the arm's'24 and maybe tightened by a hand nut 28 so as to clampth'e parts at The slots are concentric :with the pin25 and perniitthe standard 21 "and the plates 22 to be turned onxsu'ch pin to vary the inclination of'thezst'andardfil with {respect to "the arms 24, 'andfthe parts may 'beheld as set by tightening thenut528. The pin 26 may be angular in section to "prevent turning, as indicated in Fig. 2;1br it may be of ordinary round stock, as indicated :at 26%, Fig. 6. p

The arms .24 which support the back are pivoted to the head 'by'zp'ivojt pins29, and

the arms will swing up and down to the extent permitted by pins 30 which are set in the depending "flanges of the head sections ,11 and 12 "project 'into fslo'ts 31 in thefront ends 'of'th'e arms 24. The pins 30, by "striking the arms ;at the ends 'ofthe slots, serve as stops to {limit the swinging of'the arms; 'andwh'emthe arms swing,*"the backwill tilt forwardly-or backwardlyto a corresponding extent.

at 15. The lower head member '12 "has a The arms arenormally supported .with'the 7 back tilted forwardly by a pair of coiled springs 32 which rest in seats in a hanger riveted as at 34 to the vertical flanges of the seat brackets 10, and the upper ends of the springs are confined by a double cap 35 through which extends the headed end of a bolt 36, which depends between the springs and extends at its lower end through a cross plate or bridge piece 37. This bridge piece, .as shown in Fig. 7 is flanged to give it strength and is formed at its outer ends with knife-edge bearings 38 which project into V- shaped notches 39 in the arms 24:, the knife edges resting against the arms at the apexes of the notches. The tension of the springs is controlled by a hand nut 40 on the lower projecting end'of the bolt36.

It willbe apparent that, when the backis forced or'yinclined backwardly, the arms 24 .will swing downwardly on their pivots 29 [and thereby compress'the springs between the hanger 33 and the cap piece 35, thereby providing ayieldingsupport for the back; and I the springs are conveniently housed underthe rear of the seat and between the side arms which support the back. When the pressure on the back is removed, the springs liftthe arms and carry the back to .its original position.

, By the means described, a simple and effective structure is provided for mounting a 7 yielding back-on a chair of the typereferred Y to and also for permitting an initial ad justment of the back to any desired angle;

- and this result can'be accomplished by means of parts most-of which can be pressed or stamped and punched from sheet metal, with the advantage of cheapnessand rapidity of manufacture. I The: details are capable of change or modification, and no limitation in this respect is implied.

w Having-thus described our invention, what we claim is: 1. A. chair comprislng a seat and its support, a pair of horizontally extending arms pivoted to the support at their front ends and extending rearwardly beyond the seat, a

back mountedfon the. rear ends of said arms, a hanger secured to theunder side of the seat, a pair of springs standing vertically upon said hanger, a cap von the upper onds of the springs, a bolt extending downwardly from said cap and through the hanger, and a cross-connection between the lower end of the bolt and the arms.

L on said hanger between said brackets, a

bolt supported on the upper end of the spring and extending downwardly through the hanger, and a cross piece connected to the lower end of the bolt and bearing upwardly against the arms, whereby the spring resists depression of the arms. s

3. A chair comprising a supporting post having a head thereon, a pair of seat brackets secured to opposite sides of the head, a

pair of'rearwardly extending arms pivoted at their frontends to opposite sides of the head, a back mounted on the rear ends of the arms, a spring hanger attached to the seat brackets behind the head, a spring standing on said hanger between said brackets, a bolt supported on the upper end of the spring and extending downwardly through the hanger, and a cross piece connected to the lower end of the bolt and bearing upwardly against the arms, whereby the spring resists depression of the arms, said arms'having notches therein and the cross piece having knife bearings at its ends pro,- jecting into said notches. V

i. A chair comprising a supporting post, a pair of inverted channel members fastened tosaid post in spaced relation, a pair of'seat brackets fastened to the upper of said members, a pair of rearwardly extending arms pivoted at their front ends toopposite sides of said channel members, a back niountedion the rear ends of said arms, a spring hanger attached to said seat brackets, a spring positioned on said hanger between said brackets, a bolt connected to the upper. end ofsaid spring and extending downwardly through said hanger, and means connecting the lower end portion of said bolt with said arms whereby said spring resists depression of said arms. Y

5. A chair comprising a supporting post having a head thereon, a pair of seat brackets secured to opposite sides of the head, a pair of rearwardly extending arms pivoted at their front ends to opposite sides-of the head, a back mounted on the rear ends of the arms, a spring hanger attached to the seat brackets behind the head, a pair of springs standing on said hanger between saidbrackets, a cap spanning the upper ends of said springs, a bolt attached to said cap and extending downwardly between said springs and through said hanger, and a cross piece connected to the lower end of the bolt and bearing upwardly against said arms whereby the springs resist depression of the arms.

In testimony whereof, we hereunto 'afiix our signatures.

CLIFFORD H. PETERS. EDWARD D- BUMP. 

